September

October

November

KW

Mo

Di

Mi

Do

Fr

Sa

So

44

26

27

28

29

30

31

1

45

2

3

4

5

6

7

8

46

9

10

11

12

13

14

15

47

16

17

18

19

20

21

22

48

23

24

25

26

27

28

29

49

30

1

2

3

4

5

6

December

KW

Mo

Di

Mi

Do

Fr

Sa

So

49

30

1

2

3

4

5

6

50

7

8

9

10

11

12

13

51

14

15

16

17

18

19

20

52

21

22

23

24

25

26

27

53

28

29

30

31

1

2

3

The year 2020s maximum week number is WN 53. 2020 starts on
Wednesday, January 1st 2020 and ends on Thursday, December 31st 2020.
One year has up to 53 week numbers. The first week of the year (WN 1) is the week containing january 4th or the first tuesday of the Year.

This is a private project of Thomas Lemmé
week-number.net offers a calendar with Week Numbers.